某石墨尾矿中钒矿预富集工艺研究  

Study on Preconcentration Process of Vanadium Ore in a Graphite Tailings

作　　者：刘建国 戴惠新[1] 于丽丽 冯嘉颖 王在华 LIU Jianguo;DAI Huixin;YU Lili;FENG Jiaying;WANG Zaihua(Faculty of Land Resources Engineering,Kunming University of Science and Technology,Kunming 650093,China;Institute of Resources Utilization and Rare Earth Development,Guangdong Academy of Sciences,Guangzhou 510650,China;State Key Laboratory of Separation and Comprehensive Utilization of Rare Metals,Guangzhou 510650,China;Guangdong Key Laboratory of Mineral Resources Development and Comprehensive Utilization,Guangzhou 510650,China)

机构地区：[1]昆明理工大学国土资源工程学院,昆明650093 [2]广东省科学院资源利用与稀土开发研究所,广州510650 [3]稀有金属分离与综合利用国家重点实验室,广州510650 [4]广东省矿产资源开发与综合利用重点实验室,广州510650

出　　处：《有色金属（选矿部分）》2024年第11期70-76,共7页Nonferrous Metals（Mineral Processing Section）

基　　金：广东省基础与应用基础研究基金资助项目(2022A1515012165);广东省重点领域研发计划项目(2022B0303030002)。

摘　　要：南非某石墨浮选尾矿含V_(2)O_(5)品位0.69%,主要含钒矿物为含钒褐铁矿、含钒假金红石、含钒白钛石等,理论V_(2)O_(5)品位为7.58%,理论V_(2)O_(5)回收率为68.84%,尾矿-0.010 mm粒级V_(2)O_(5)金属分布率高达35.91%,获得高V_(2)O_(5)回收率的难度大。根据尾矿中含钒矿物和脉石矿物工艺矿物学特征,含钒矿物的预富集工艺主要对比了全重选、全磁选、重选—磁选联合、磁选—重选联合工艺流程,结果表明,几种工艺流程获得的钒精矿回收率接近,但全磁选流程能耗最高,钒精矿品位最低;全重选流程工艺复杂、设备种类多、占地面积大;重选—磁选流程比磁选—重选流程能耗低,品位和回收率能更好地得到保障。综合考虑四种工艺流程的分选指标、工艺流程复杂程度、能耗高低等情况,螺旋溜槽重选—高梯度强磁选适宜作为该石墨浮选尾矿预富集含钒矿物的工艺流程,采用该工艺,可获得V_(2)O_(5)品位5.68%、V_(2)O_(5)回收率65.36%的钒精矿产品。该石墨型钒矿可作为钒资源的来源之一,应引起重视。研究结果可为该类钒矿资源的预富集提供参考。The grade of V_(2)O_(5)is 0.69%in a graphite flotation tailings from South Africa.The main vanadium-bearing minerals are vanadium-bearing limonite,vanadium-bearing pseudo-rutile,and vanadiumbearing white titanium and so on.The theoretical V_(2)O_(5)grade is 7.58%,and the theoretical V_(2)O_(5)recovery is 68.84%.The distribution rate of V_(2)O_(5)metal in tailings-0.010mm is as high as 35.91%,and it is difficult to obtain high V_(2)O_(5)recovery.According to the process mineralogy characteristics of vanadiumbearing minerals and gangue minerals in the tailing,the pre-concentration process of vanadium-bearing minerals mainly compares the full gravity separation,full magnetic separation,gravity separation-magnetic separation combined,magnetic separation-gravity separation combined process.The results show that the V_(2)O_(5)recovery of vanadium concentrate obtained by several processes is close,but the full magnetic separation process has the highest energy consumption and the lowest grade of vanadium concentrate.The full gravity separation process has complex process,many kinds of equipment and large area.The gravity separation-magnetic separation process has lower energy consumption than the magnetic separation-gravity separation process,and the grade and recovery rate can be better guaranteed.Considering the separation index,process complexity and energy consumption of the four processes,the combined process of gravity separation-magnetic separation is suitable for the pre-concentration of vanadium-bearing minerals from the tailing,the vanadium concentrate can be obtained with V_(2)O_(5)grade of 5.68%and V_(2)O_(5)recovery of 65.36%.This graphite-type vanadium ore can be used as one kind of sources of vanadium resources,which should be paid attention.The results can provide a reference for the preconcentration of this kind of vanadium ore resources.

关 键 词：石墨尾矿 含钒矿物 预富集 工艺流程 

分 类 号：TD922[矿业工程—选矿]